Question

if a Ray of light enters from alcohol to air. the refractive index of alcohol is 1.36. calculate the speed of light in alcohol with respect to air

Answer 1

refractive index = speed of light in vaccum ÷speed of light in medium
$1.36 = \frac{3 \times {10}^{8} }{v}$
so v=(3×10^8)÷1.36
v=2.2×10^8

Answer 2

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